CVE-2026-51690

9.1 criticalEPSS 0.5%

Critical (9.1). EPSS 0.5% chance of exploitation in the next 30 days.

Incorrect access control in the setWanCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to alter upstream provisioning and connectivity via sending a crafted POST request to /cgi-bin/cstecgi.cgi.

Severity

CVSS 3.1

9.1 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 43% of CVEs (scores of 2026-11-01)
CWE: CWE-284
Published: 2026-08-31
Modified: 2026-09-02
Record from: the NVD, synced 2026-10-19

References

https://github.com/DarkBoulder/CVE-Vendor-Coordination/blob/main/TOTOLINK/README.md
https://github.com/ShengWu00/CVE-Vendor-Coordination/blob/main/TOTOLINK/README.md
https://www.totolink.net/
https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/190/ids/36.html

Check your stack JSON